<i>trans</i>-Acetato(methoxycarbonyl)bis(triphenylphosphine)palladium(II)

Piero, G. Del; Cesari, M.

doi:10.1107/s0567740879009481

Cited by 20 publications

(5 citation statements)

References 4 publications

(4 reference statements)

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“…It has been noted that some catalytic systems involving triphenylphosphine complexes are deactivated by the formation of µ-1 2 compounds. 23 However, some Ph2P-bridged rhodium complexes are active hydrogenation cataysts, 19 and other examples of catalysis by phosphido-bridged complexes are known.16, 24 The rhodium µ-f-Bu^P system remains catalytically active at elevated temperatures even for prolonged periods.23 Under these conditions new phosphido-bridged species are formed and they are currently under investigation.…”

mentioning

confidence: 99%

A novel palladium complex with iron-palladium dative bonding derived from 1,2,3-trithia[3]ferrocenophane, (Ph3P)PdFe(SC5H4)2.cntdot.0.5C6H5CH3

Seyferth¹,

Hames²,

Rucker³

et al. 1983

Organometallics

109

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confidence: 99%

A novel palladium complex with iron-palladium dative bonding derived from 1,2,3-trithia[3]ferrocenophane, (Ph3P)PdFe(SC5H4)2.cntdot.0.5C6H5CH3

Seyferth¹,

Hames²,

Rucker³

et al. 1983

Organometallics

109

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“…Chem. 1981, 20, 4023-4025. (23) Orpen, A. G.; Sheldrich, G. M. Acta Crystallogr., Sect. B 1978, B34, 1992-1994.…”

mentioning

confidence: 99%

Synthesis and structure of a coordinately unsaturated trinuclear rhodium cluster

Burch¹,

Muetterties²,

Thompson³

et al. 1983

Organometallics

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“…Among square-planar palladium complexes, −COOR ligands are scarce. In the CCDC database, we found about 20 structural reports, mostly trans -bis(phosphine) complexes. In this set, the average Pd−C distance and Pd−C−O and Pd−C−O angles are 1.985 Å, 126.3°, and 112.4°, compared with 1.948(8)/1.927(8) Å, 126.4(7)/129(1)°, and 111.9(7)/111(1)° in Mol 1 and Mol 2, respectively.…”

Section: Resultsmentioning

confidence: 99%

Catalytic Properties of [Pd(COOMe)_nX_2−n(PPh₃)₂] (n= 0, 1, 2; X = Cl, NO₂, ONO₂, OAc and OTs) in the Oxidative Carbonylation of MeOH

et al. 2010

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cis-[Pd(ONO(2))(2)(PPh(3))(2)] (1) reacts under mild conditions with CO in methanol (MeOH) in the presence of pyridine (py), yielding trans-[Pd(COOMe)(ONO(2))(PPh(3))(2)] (1a). The use of NEt(3) instead of py leads to a mixture of 1a, trans-[Pd(COOMe)(2)(PPh(3))(2)] (2), and [Pd(CO)(PPh(3))(3)]. Pure 2 was prepared by reacting cis-[Pd(OTs)(2)(PPh(3))(2)] with CO in MeOH and subsequently adding NEt(3). The nitro complex trans-[Pd(COOMe)(NO(2))(PPh(3))(2)] (3a) was prepared by reacting trans-[Pd(COOMe)Cl(PPh(3))(2)] with AgNO(2) or with AgOTs and NaNO(2). New syntheses for 1 and trans-[Pd(NO(2))(2)(PPh(3))(2)] (3) are also reported. All complexes have been characterized by IR and (1)H and (31)P{(1)H} NMR spectroscopies. Complexes 1 and 2 exchange irreversibly and quantitatively one nitrato with one carbomethoxy ligand, yielding 1a. 2 in CD(2)Cl(2) at 40 degrees C decomposes with the formation of dimethyl carbonate (DMC), whereas under 4 atm of CO, DMC and dimethyl oxalate (DMO) are formed, ca. 12% each; in the presence of PPh(3) and in the absence of CO, decomposition occurs at 60 degrees C with the formation of DMC only, suggesting that decarbonylation involves a five-coordinate intermediate or predissociation of a PPh(3) ligand. The oxidative carbonylation of MeOH does not occur when using NaNO(2) or NaNO(3) as the oxidant and 1, 1a, 3, or 3a as the catalyst precursor. On the contrary, when using benzoquinone (BQ) as the oxidant, these complexes, 2, or [Pd(COOMe)(2-n)X(n)(PPh(3))(2)] (X = Cl, OAc, OTs; n = 1, 2) promote selective catalysis to DMO. After catalysis the precursors are transformed into [Pd(BQ)(PPh(3))(2)](2).H(2)BQ, [Pd(CO)(PPh(3))](3) and [Pd(CO)(PPh(3))(3)]. Also the last with BQ gives selective catalysis to DMO. The solid-state structures of 1.CH(2)Cl(2) and 1a have been determined by means of single-crystal X-ray diffraction.

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trans-Acetato(methoxycarbonyl)bis(triphenylphosphine)palladium(II)

Cited by 20 publications

References 4 publications

A novel palladium complex with iron-palladium dative bonding derived from 1,2,3-trithia[3]ferrocenophane, (Ph3P)PdFe(SC5H4)2.cntdot.0.5C6H5CH3

A novel palladium complex with iron-palladium dative bonding derived from 1,2,3-trithia[3]ferrocenophane, (Ph3P)PdFe(SC5H4)2.cntdot.0.5C6H5CH3

Synthesis and structure of a coordinately unsaturated trinuclear rhodium cluster

Catalytic Properties of [Pd(COOMe)_nX_2−n(PPh₃)₂] (n= 0, 1, 2; X = Cl, NO₂, ONO₂, OAc and OTs) in the Oxidative Carbonylation of MeOH

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trans-Acetato(methoxycarbonyl)bis(triphenylphosphine)palladium(II)

Cited by 20 publications

References 4 publications

A novel palladium complex with iron-palladium dative bonding derived from 1,2,3-trithia[3]ferrocenophane, (Ph3P)PdFe(SC5H4)2.cntdot.0.5C6H5CH3

A novel palladium complex with iron-palladium dative bonding derived from 1,2,3-trithia[3]ferrocenophane, (Ph3P)PdFe(SC5H4)2.cntdot.0.5C6H5CH3

Synthesis and structure of a coordinately unsaturated trinuclear rhodium cluster

Catalytic Properties of [Pd(COOMe)nX2−n(PPh3)2] (n= 0, 1, 2; X = Cl, NO2, ONO2, OAc and OTs) in the Oxidative Carbonylation of MeOH

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Catalytic Properties of [Pd(COOMe)_nX_2−n(PPh₃)₂] (n= 0, 1, 2; X = Cl, NO₂, ONO₂, OAc and OTs) in the Oxidative Carbonylation of MeOH